63978767953 has 2 divisors, whose sum is σ = 63978767954. Its totient is φ = 63978767952.

The previous prime is 63978767947. The next prime is 63978767959. The reversal of 63978767953 is 35976787936.

It is a balanced prime because it is at equal distance from previous prime (63978767947) and next prime (63978767959).

It can be written as a sum of positive squares in only one way, i.e., 33126548049 + 30852219904 = 182007^2 + 175648^2 .

It is a cyclic number.

It is not a de Polignac number, because 63978767953 - 2⁹ = 63978767441 is a prime.

It is not a weakly prime, because it can be changed into another prime (63978767959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31989383976 + 31989383977.

It is an arithmetic number, because the mean of its divisors is an integer number (31989383977).

Almost surely, 2^63978767953 is an apocalyptic number.

It is an amenable number.

63978767953 is a deficient number, since it is larger than the sum of its proper divisors (1).

63978767953 is an equidigital number, since it uses as much as digits as its factorization.

63978767953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360067680, while the sum is 70.

The spelling of 63978767953 in words is "sixty-three billion, nine hundred seventy-eight million, seven hundred sixty-seven thousand, nine hundred fifty-three".